<!DOCTYPE html>
<html lang="en">

<head>
    <meta charset="UTF-8">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <title>Document</title>
    <style>
        /* .font32 {
            color: green;
        }
        div {
            color: red;
        } */
        /* #div1 {
            color: red;
        } */

        /* a {
            color: rebeccapurple;
        } */

        /* div a {
            color: red;
        } */
        /* ul li a {
            color: green;
        } */
        /* ul>a {
            color: green
        } */

        /* .c1 a {
            color: red;
        } */
        /* * {
            color: rgb(255, 0, 0);
        } */
        /* .font32 {
            font-size: 32px;
            font-weight: 400;
        } */
        div {
            /* border-width:5px;
            border-color: black;
            border-style: solid; */
            border: 5px solid green;
            width: 500px;
            height: 200px;
            /* margin: 10px; */
            /* margin: 5px;
            padding: 10px;
            padding-left: 20px; */
        }
        /* span {
            display: block;
            border: 5px solid green;
            width: 500px;
            height: 200px;
        } */
        html {
            padding: 50px;
        }

    </style> 
</head>

<body>
    
    <div class="font32" id="div1">我是一个div, class为font32</div>
    <div class="font32" id="div2">我是一个div, class为font32</div>
    <div><a href="#">我是一个div</a></div>
    <span class="font32">我是一个span</span>
    <ul class="c1">
        <li>aaa</li>
        <li>bbb</li>
        <li><a href="#">ccc</a></li>
    </ul>
    <ol>
        <li>1111</li>
        <li>2222</li>
        <li>3333</li>
    </ol>
    <button id="submit">提交</button>   
    
</body>

</html>